Problems with image size. Frontier 390

[FujiMate]

Hello, this is my first time in this forum.
I have some troubles with my Fuji Frontier 390. Two weeks ago I had problems with my subscanner, I changed the whole rollers because of jamming paper on unit 2. Today I am able to print again, but unfortably the size of the image is less than the size of the paper. For instance, when I print a paper conditional setup, the image is reduced compared to the previous prints and if I print 13x18 cm the image only has 16,5 cm of length. (the width is right)
The paper size is right! I did the Paper Feed Length Adjustment; Image position fine adjustment and Main Scanning Position Adjustment. Anyone knows how to improve it?

Thank you a lot!